NiteRider Lumina 750 Boost & Sabre 50 Combo Bike Light 1 LED which can produce up to 750 lumens 6 operation modes, including 5 constant light levels and 1 daylight flashing mode FL1 Standard IP64, water-resistant Adjustable rubber strap fits standard and oversized 35mm handlebars IntelliCharge technology allows it to charge in half the normal amount of time